It's goddamn annoying as fuck, isn't it? But apparently it's just an unfortunate fact that this is the way it is, has been, and probably always will be. From an article discussing
Y-chromosomal Adam and mitochondrial Eve, explaining one likely possibility why genetic Adam is so much more recent than genetic Eve (70k years vs 150k years):
"
While fertile women had more or less equally distributed chances of giving birth to a certain number of fertile descendants, chances for fertile men varied more widely, with some fathering no children and others fathering many, with multiple women."
Ever notice how even highly undesirable females manage to have 2, 3, 4 or more kids in tow, but there are plenty of decent, good looking, worthwhile guys that don't have any? Because a lot guys will fuck anything; but women are more selective and just choose the "best" ones (the ones they perceive as "best" anyway). Somehow our species evolved to where females can get some without any effort, but guys have to put on a display and show that they are more desirable than the others. Rather than being the other way around, or at the very least, equal.
In other words, while being a player/mack daddy is looked down upon by most of society, it serves mother nature's species propagation goals
.